Hi, I am spray coating PCB's with the above mentioned coating. The problem is that as soon as the boards are coated, there are pin holes on the surface that subsequently turn into localized areas of dewet on te PCB (its almost as it the coating is flashing too quickly). I am following the recommended cleaning procedure by Cytec.

The Cytec technical person still maintaines that is contamination of the board, which, after exhaustive review of the cleaning process, i am hesitant to agree. Has anyone faced a similar issue, and what can be some possible solutions??

I am using masking tape, the 3M high temp blue masking tape. the problem though doesnt seem to be related to the masking tap as i am seeing pin holes and eventual dewets over entire ckt board (its almost as if the board has chickenpox under black light, even on the component surface, as well on PCB surface)

Have you tried to conformal coat a bare board as it comes in from the board shop? If you still have the same results at least you know the problem is not related to your process. If you don't have the problem you need to have a closer look at your cleaning process.